subbituminous

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adjective

Partly or imperfectly bituminous.

“subbituminous coal”

Scrabble 19
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Meanings

adjectivesubbituminous (not comparable)
  1. not comparablePartly or imperfectly bituminous.

    subbituminous coal

Origin

From sub- + bituminous.

Full word history & related roots →
Cite this entry
APA

subbituminous. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/subbituminous

MLA

“subbituminous.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/subbituminous. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “subbituminous,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/subbituminous.

Source: subbituminous on Wiktionary, CC BY-SA 4.0.